Quick and concise answers to many everyday physics questions.
Ask & Experiment has experiments for you to try at home, activity books to download, PhysicsQuest resources for your school or after school group, and a way you can get your physics questions answered by real physicists.
A great website explaining the physics of everyday life. Another great resource for getting answers to your questions!
LOTS of questions and answers, about every part of science you can imagine.
Questions about all sorts of science, especially for students and teachers.
Astronomy questions answered by real NASA astronomers.
Another astronomy site brought to you by NASA.
Yet more questions answered by NASA astrophysicists - this time on all different parts of physics.
Answers to geology questions, courtesy of the University of Hawaii.
Science answers from the front page of the internet.